<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>
        {% block title %}
        {% endblock %}
    </title>
     {% block extCSS %}
        {% endblock %}
     {% block extJS %}
        {% endblock %}
</head>
<body>

 {% block content %}
 {% endblock %}

 {% block footer %}
 {% endblock %}

</body>
</html>